Valve for controlling the flow of gas through purifiers, &amp;c.



PATENTED'DEGQ 27, 1904.

T. REDMAN. VALVE FOR CONTROLLING THE PLOW 0F GAS THROUGH PURIFIERS; 6w.

' ZSEEBTS-SHEET 1.

APPLICATION FILED MAR. 19, 1904.

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7 PATENTED DEC. 27, 1904. T. REDMAN.

VALVE FOR CONTROLLING THE PLOW OF GAS THROUGH PURIFIERS, m.

APPLICATION FILED MAR. 19, 1904.

QSHEETfi-SHEET 2.

l\To. 778,332.

UNITED STATES.

Patented December 27, 1904.

P TENT OFFICE.

THOMAS REDMAN, OF BRADFORD, ENGLAND.

SPECIFICATION formingpart of Letters Patent No. 778,332, dated December27, 1904.

Application filed March 19, 1964. Serial No. 198,991.

To all whom, it may concern:

Be it known that I, THoMAs REDMAN, a subject of the King of GreatBritain and Ireland, and a resident of The Priory, Bolton, Bradford, inthe county of York, England, have invented certain Improvements inValves Applicable for Controlling the Flow of Gas Through Purifiers andother Vessels, (for which I have made application for a patent in GreatBritain, No. 4,533, dated February 24, 1904,) of which the following isa specification.

This invention relates to certain improvements in the construction ofvalves in connection with the purification of gases; and the object isto arrange and combine the parts of said valves in such a manner thatthe current of gas flowing through the main supply-pipe to the purifiersor the like may be made-to flow.

through the apparatus in either direction, and thus by being able toreverse the flow of the gascurrent to more effectually utilize the.purifying agency deposited in the box; also,.to arrange the valves sothat the flow of gas may be entirely out off from the purifying-box andcontinued direct through the main pipe, thus forming a by-pass in thevalve or when necessary to close and stop the flow through the mainsupply-pipeleading to a range of purifiers or the like. I

In describing myimproved valve in detail reference is made to theaccompanying drawings, in Which Figure 1 represents an elevation of avalvecasing suitable for carrying out my improved construction. Fig. 2is a sectional plan through line 1 2; Fig. 3, a sectional elevationthrough line 3 4; Fig. 4, an elevation of the valve shell or plug; Fig.5, aplan of the top disk.

plate covering the center compartment of Valve-casing; Fig. 6, an endview of a purifying-box with valve and connecting-pipes coupled to samedrawn to a reduced scale, and Fig. 7 is a plan of same drawn at rightangles to the view shown by Fig. 6.

The valve-casing 1 is provided with branches 2, 3, 4, and 5, adapted forpipe connections,

, and the interior circumference of casing'at 1 is truly bored eitherparallel or conical for the reception of the operative shell portion ofthe valve, which is somewhat in the form of a plug, provided with acircular-bottom disk plate 6 and a cover disk plate 6, made to fit theinternal circumference of valve-casing, the said disks being connectedby a central shaft and mid-feather 7 and by two coverplates 8 and 9,also turned to fit the internal circumference 1 of easing. 'A projection10 at top affords means for rotating and placing the plug within thevalve-casing in the position required. The raised portions Pon the uppersurface of disk plate 6, corresponding in position to the mid-featherand shutters, indicate the position of the latter within the casing inrelation to the branches.

On utilizing the valve in connection with gas-purifying boxes 11 onevalve is required for each purifying-box of the ordinary internalconstruction, and in describing the action of the valve I will supposethe branches 2 and 4 are connected to ordinary main gas-pipes l2 and 12,conveying gas from the retorts to the gas-holder or the like, and thebranches 3 and 5 connected to the inlet 13 and outletpipes- 14,respectively, of a gas-purifying box 11., as shown by Figs. 6 and 7.

The branch 3 is shown connected by pipe 13 to the usual inlet and branch5 by pipe 14 to the usual outlet of a purifying-box 11, in which casethe gas flowing through branch 2 passes in the direction of curved arrowG to branch 3 and through connecting-pipe to purifying-box 11, thencepermeating upward through the purifying agency to the top of box, thegas escaping through pipe 14 to outlet branch 5, into and through thevalve-casing in the direction of arrow D, and to branch 4, connected toa continuation of main pipe 12 on the opposite side of valve.

It is well known to gas-workers that the lower portion of the purifyingagency within an ordinary purifying-box, such as 11, is liable to becomeclogged to some extent with heavy impurities, thereby reducing thefreedom of the passage of gas through the purifying agency, while theupper portion of said agency is far from being exhausted.

In order to more fully utilize the purifying agency, andthereby keep abox 11 at work for a longer period without having to empty and rechargesame, I accomplish this by turning the plug within casing 1 a distanceof ninety degrees from the position shown, bringing the mid-feather 7shown by full lines to that shown by dotted lines in Fig. 2. Thus bythese means the direction of the gas-flow from the inain 12 throughpurifying-box 11 is reversed and delivered to the upper surface of thepurifying agency within the box. The crude gas descending permeatesthrough the purifying agency in a downward direction, thereby moreelfectiially using and exhausting the efficiency of said agency and tothat extent prolonging the time required between one changing andanother of the purifying agency within the box.

When it is necessary for the inlet and outlet branches 3 and 5, leadingto the purifying-box 11, to be closed, the rotary valve-plugis movedforty-five degrees from the position showmso that the cover-plates 8 and9 are opposite said branch openings,the mid-feather 7 in that case beingin line with the branch openings 2 and 4, leaving a direct thoroughfarethrough the gas-main pipe 12 and valve, and by moving the said plug sothat the cover-plates 8 and 9 close the openings through branches 2 and4 it will be obvious that the gas-main 12 is then closed. 1t Will alsobe obvious that valves made in the manner as shown and described areequally applicable to reverse the direction of the current supplied tosame, whether gas or liquid.

What I claim as my invention isl. A four-way valve-casing provided withports, a rotating shell-plug in said casing having a top and bottomcircular dish coln'iected by a mid-feather 7 of a cross-sectional widthless than the diameter of the ports extending across the disks and withcover-plates h and 9 combined and adapted for directing the currentflowing through the valve in the manner substantially as shown anddescribed.

2. A valve-casing having ports therein and combined with a rotary shelldivided at or near the center by a mid-feather of a crosssectional widthless than the diameter of the ports and at the circumference bycover-plates for the purpose and substantially in the manner as shownand described.

8. A valve comprising a casing having a plurality of ports, amid-feather of less width in cross-section than the cross-sectionaldimension.of the ports whereby opposite ports will be left open when themid-feather is in line therewith,and cover-plates disposed in a plane atright angles to the plane of the mid-feather and adapted to closeopposite ports, the said mid-feather \vith'cover-plates being rotatablein unison. whereby a pair of opposite ports may be left open and theother pair closed, or the adjacent ports may be left open in pairs forthe passage of the fluid in reverse directions through the valve,substantially as described.

In witness whereof I. have hereunto set my hand in the presence of twowitnesses.

TLHOMA S REDMAN.

WVitnesses:

W. ILLINGWORTH, E. HAMMOND.

